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US 5,263,082 AGranted
Text mail system using ISDN and ISDN communication terminal device for use therein
AssigneeKabushiki Kaisha Toshiba
InventorsShirou Kotake, Hideki Hayakawa
Life of this patent
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Abstract
A text mail system in which a pseudo destination subaddress randomly generated at a call receiver side at the time of receiving an incoming call from an integrated services digital network is used to manage the storing or reading out operation of various sorts of messages in a mail box. The text mail system, which uses the pseudo destination subaddress as a box number based on the property that the pseudo destination subaddress is randomly given for each incoming call, can secure a high mail confidence.
Claims15
A text mail system based on an integrated service digital network connected with a plurality of communication terminal devices, each of said communication terminal devices comprising:
- memory means at least having an area for storing therein an answering message for informing a caller side that a called side is in an automatic answering operation mode, an area for storing therein a business message from the caller side to the called side being in the automatic answering operation mode and an area for storing therein an additional message to be conveyed from the called side to the caller side in response to the business message;
- automatic answering operation control means, when receiving a call from said network in the automatic answering operation mode, for reading said answering message from said memory means and sending the answering message to the caller side and also for storing ins aid memory means said business message received from said caller side in response to the answering message;
- mail box operation control means for operating said memory means as a mail box for text messages by storing or reading out said business message or said additional message into or from the area for the business message or the area for the additional message in said memory means in association with a specific box number;
- pseudo destination subaddress generation means for randomly generating a pseudo destination subaddress at the time of receiving said call from the network in said automatic answering operation mode;
- and
- notification means for informing said caller side of said pseudo destination subaddress;
- wherein, at the time of receiving the call from the network in the automatic answering operation mode, one of said plurality of communication terminal devices as a call receiver terminal randomly generates the pseudo destination subaddress and informs another of the plurality of communication terminal devices as a caller terminal of the pseudo destination subaddress, said caller terminal transmits call information in which said pseudo destination subaddress informed from the call receiver terminal is contained as necessary to utilize the pseudo destination subaddress as said box number when the memory means of said call receiver terminal is used as the mail box.
4 more elements
A communication terminal device for use with an integrated services digital network, comprising:
- memory means at least having an area for storing therein an answering message for informing a caller side that a called side is in an automatic answering operation mode, an area for storing therein a business message from the caller side to the called side being in the automatic answering operation mode and an area for storing therein an additional message to be conveyed from the called side to the caller side in response to the business message;
- automatic answering operation control means, when receiving a call from said network in the automatic answering operation mode, for reading said answering message from said memory means and sending the answering message to the caller side and also for storing in said memory means said business message received from said caller side in response to the answering message;
- detection means for detecting a specific destination subaddress contained in incoming call information received from said network;
- pseudo destination subaddress generation means for randomly generating a pseudo destination subaddress when said detection means fails to detect said specific destination subaddress in said automatic answering operation mode;
- re-call condition notification means for informing said caller side of how to re-call utilizing said pseudo destination subaddress;
- business message reception control means for storing in said memory means the business message received from the caller said in response to said answering message sent to the caller side at the time for reception of said incoming call in association with said pseudo destination subaddress;
- business message reference means for selecting the business message stored in the memory means through a predetermined selecting operation and displaying the business message;
- additional message creation means for creating the additional message responding to said business message;
- additional message memory control means for storing in said memory means said additional message in association with the pseudo destination subaddress of the business message referenced at the time of creating said additional message;
- and
- mail operation control means, when the detection means detects the specific destination subaddress contained in the incoming call information received from the network, for reading out the additional message associated with the pseudo destination subaddress from said memory means and sending said read-out additional message to the caller side and also for storing in the memory means the business message responding to said additional message received from the caller side in association with the same pseudo destination subaddress.
8 more elements
A communication terminal device used in an integrated services digital network, comprising:
- memory means at least having an area for storing therein a business message received from a caller side in an automatic answering operation mode and an area for storing therein an additional message inputted from a called side in response to the business message;
- notification means for randomly generating a pseudo destination subaddress at the time of receiving a call from the network in the automatic answering operation mode and for informing said caller side of said pseudo destination subaddress;
- and
- message storage/read control means for controlling storage or reading out of the business message or the additional message into or from the area for the business message or the area for the additional message in said memory means in association with said pseudo destination subaddress;
- wherein, at the time of receiving the call from the network in the automatic answering operation mode, a text mail box is opened in said memory means in association with said pseudo destination subaddress for carrying out a text mail communication by accessing said text mail box with use of said pseudo destination subaddress as a box number.
2 more elements
Dependencies are inferred from the claim text.